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SPL Boxes SB184-210BL Custom-fit dual 10" sealed subwoofer enclosure — fits 2014-up Chevy Silverado and GMC Sierra Crew Cab trucks

Item # 419184210B

Add custom-fit bass to your Silverado or Sierra with this rugged SPL box.

Find what Fits your vehicle

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Add custom-fit bass to your Silverado or Sierra with this rugged SPL box.

Item # 419184210B

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
In stock
$254.99

Get questions answered fast & free

Expert help 400+ hours training Virginia-based

About the SPL Boxes SB184-210BL

Bob Bihlmayer

Product highlights:

  • vehicle-specific downward-firing sealed subwoofer enclosure
  • holds two 10" subwoofers (not included)
  • installs under rear seat of 2014-up Chevy Silverado and GMC Sierra Crew Cab trucks
  • MDF construction with bedliner finish
  • requires drilling screw holes in the enclosure and connecting speaker wire to subs
  • mounting hardware and speaker wire not included
  • internal volume: 1.6 cubic feet
  • subwoofer mounting depth: 5.5"
  • dimensions: 52.75"W x 15.5"H x 9.5"D
  • warranty: 1 year
  • MFR # SB184-210BL
  • Item # 419184210B

What's in the box:

  • One vehicle specific sealed enclosure for two 10" subwoofers with spring-post terminals

More details on the SPL Boxes SB184-210BL

Pat M.

Product Research

Features

Vehicle Compatibility: This custom-fit sealed enclosure is designed specifically to fit select 2014-2022 Chevrolet Silverado and GMC Sierra Crew Cab pickup trucks. Please enter your vehicle information to confirm fit.

Mounting Location: The enclosure mounts under the rear bench seat without taking up interior space.

Enclosure: The enclosure is made from durable MDF (Medium Density Fiberboard) that resists flexing and damps resonance. It's covered with a bedliner type material.

Terminals: The wire terminals are spring-posts (two pair) that accept pin connectors or bare wire up to 10-gauge. Inside the enclosure there are 0.205" male quick-slides (will accept 0.205" female quick slides) for both the positive and negative terminals. The wire can also be attached using the nuts holding the quick-slides in place.

Note: Speaker wire is needed to connect the terminals to the subwoofers.

Dual 10" Subwoofers: The enclosure holds two 10" subwoofers in a single 1.6 ft³ chamber. Once mounted the woofers are down firing.

Mounting: No mounting hardware or speaker wire is included with the enclosure.

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Customer Q&A

4 questions already asked

Q
Will the 10tw3-d4's be a good fit for the box? Or is there too much internal volume? Will it affect the quality and sound of the speakers?
gio  May 18, 2024
1 answer
A
That JL Audio subwoofer is not a good match for this enclosure's box volume. It works best in a 0.519 cubic foot box and this enclosure would give 0.8 cubic feet per sub. That is too far from ideal to be a good match. We have advisors that can be reached by calling 1-800-324-9695 that can discuss all your goals for the bass and give a recommendation on subs for this box.
jason  May 18, 2024 (Staff)
Q
Is there space on the box to mount the amplifier?
andre  May 10, 2024
1 answer
A
There is no specific space for mounting an amplifier on the SPL Boxes SB184-210-BL, Andre. Depending on your specific amp choice and specific vehicle install, you may be able to mount a small amplifier in a discreet location where it will get ample cooling.
bo  May 10, 2024 (Staff)
Q
Is this a single box where the speakers are open to each other and you can use a passive radiator, or is this 2 sealed boxes in one package?
james b  Apr 17, 2024
1 answer
A
Greetings James. Excellent question. It is a single chamber. Total of 1.6 cubic feet of air space, so you can use a passive radiator with this box.
thomas  Apr 17, 2024 (Staff)

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